package com.rg.util;

public class Expression{
   public static void main(String args[]){
      Calculate exp = new Calculate();

      exp.initExpression();
      if(exp.verifyExpression()==false){
         System.out.println("This expression is illegal!");
         System.exit(0);
      }

      System.out.println(exp.getExp()+" = "+exp.expressionEvaluation());
   }
}